Process of removing fat and impurities from vegetable and animal materials.



UN TED STATES PATENT OFFICE.

JULIUS STOCKHADSEN, 01F KREFELD, GERMANY.

. PROCESS OF REMOVING FAT AND IMPURITIES FROM VEGETABLE AND ANIMAL MATERIALS.

Patented Aug. 13, 1912.

No Drawing. Original application "filed October 1, 1908, Serial No. 455,782. Divided and this application file July 18, 1909. Serial No. 507,443.

To all whom it may concern:

Be it known that I, JULIUS S'rocKnAUsaN, a subject of the German Empire, residing at 105 Fischelnerstrasse, 'Krefeld, Germany, 5 have invented a new and useful Improvement in. the Process of Removing Fat and Impurities from Vegetable and Animal Materials; and I do hereby declare the following to be a full, clear, and exact description of the same.

thereby.

This application is a division of the application Ser. No. 455732, filed by me on ()ctober 1, 1908. v

To carry out my process I subject the above mentioned materials to treatment with an emulsion formed as follows: I take chlorids of the hydrocarbons having more than one carbon atom, such as tetrachlorethane, pentachlorethane, trichlorethylene and perchlorethylene. Then I emulsify by means of sulfonated products especially sulfonated oils or fats, or Turlrey-red 011, or the soap obtained by saponification of sulfonated fats or oils with at least 6% of sodium hydrate. Ordinary soaps and saponaceous compounds-although to a less degree--can also be emulsified ,with the above mentioned cholrids.

Below are given four specific examples 85 illustratin the process in detail:

I. 10 ki ograms cotton are well moistened with warm water and then treated with a solution of 1.5 kilograms calcinated soda dissolved in asuflicient quantity of water.

At the same time, 300 to 400 grams of a mixture of so-called monopol soap (2'. e. a soap obtained by treating sulfon'ate oils or fats e. castor oil with more than 6% of caustic soda preferably at hi h tem erature) mixed ,45 with 60 to 80 parts 0 tetrac lorethane, en-

tachlorethane, trichlorethylene or perch orethylene' are dissolved in a suflicient quantity'of water to obtain a thorough impregnation of the cotton with the solutionfl The 60 cotton is treated with the aqueous solution of said mixture for about 5 to 10 minutes at 70 centigrade and then boiled therewith during half an hour. Thereafter the cotton is rinsed, centrifugated and dried in the usual way.

II. 125 kilograms cotton waste are treated with 16 kilograms soda, 4 kilograms water-glass, 34 degrees Baum, and 2 to 3 kilograms of the above mentioned mixture in the same way as described above under Example I.

III. WVool is treated with the above mentioned mixture (about 2 to 4 per cent. of the wool being used) and a suitable amount of. alkali is added to saponify the dissolved fat. in the same way as described under Exam ple I.

300 to 500 grams of the above mentioned mixture dissolved in a sufficient quantity of water and mixed with a small quantity of ammonia in a fulli g trough. Also the grains of the leather can be rubbed off with the same liquid.

The new process of aemovingfat and impurities (called briefly later on defatting) possesses the followin advantages overt e processes used up to t e present time: The goods are enetrated more easily and more strongly t an in present processes, which act only on the surface of the goods. The

new process renders possible a considerably more thorough removal of the fat, and this is of importance, especially in the washin of wool, because its amount of contained fat must be reduced as low as possible, namely to less than 1%, in order to obtain satisfactory results in the further treatment, viz:' bleaching and dyeing. In rocesses in use hitherto this is only possib e, if washing with soap is also employed, but, with the im roved process, the same result can be obtamed without the use of any soap at all. Furthermore, the new process does not stain the goods by preci itates produced by water containing l1me such waters being very injurious for washing and dyeing purposes) while the processes employed at present do stain the {goods when water contain in lime is used or washing.

aving thus fully described my invention, what I claim is:-

1. The process of defatting vegetable and animal materials, and substitutes for same, which consists in emulsifying by means of sulfonated productssuch as sulfonated oils l IV. 25 kilograms leather, are treated with 10 hydrate, emulsifying with the sea or fats, or Turkey-red oil-chloride of hy-- drocarbons having more than one carbon animal materials, and substitutes for the same, which consists in sa onifying sulfonated fats or 011s with at east 6% sodium formed chlorids of hydrocarbons aving thus v imam more than one carbon atom, and treating the said vegetable and with the resulting emulslon.

' In testimony whereof, I have signed my 15 name to this specification in the presence of two subscrlbmg wltnesses.

} JULIUS STOCK USEN. Witnesses HENRY QUADFLING, Emsa Koowoscn.

animal materials 

